KVM: x86: Remove break statements that will never be executed

Fix compiler warnings when compiling KVM with [-Wunreachable-code-break].
No functional change intended.

Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Like Xu <likexu@tencent.com>
Link: https://lore.kernel.org/r/20230807094243.32516-1-likexu@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 936a397..2673cd5 100644 (file)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1799,13 +1799,11 @@ static int writeback(struct x86_emulate_ctxt *ctxt, struct operand *op)
                                               op->addr.mem,
                                               &op->val,
                                               op->bytes);
-               break;
        case OP_MEM_STR:
                return segmented_write(ctxt,
                                       op->addr.mem,
                                       op->data,
                                       op->bytes * op->count);
-               break;
        case OP_XMM:
                kvm_write_sse_reg(op->addr.xmm, &op->vec_val);
                break;

diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index b28fd02..7c2dac6 100644 (file)
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -1293,7 +1293,6 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr)
        case HV_X64_MSR_VP_ASSIST_PAGE:
                return hv_vcpu->cpuid_cache.features_eax &
                        HV_MSR_APIC_ACCESS_AVAILABLE;
-               break;
        case HV_X64_MSR_TSC_FREQUENCY:
        case HV_X64_MSR_APIC_FREQUENCY:
                return hv_vcpu->cpuid_cache.features_eax &

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 80ec33f..5ff77a7 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4646,7 +4646,6 @@ static int kvm_x86_dev_get_attr(struct kvm_device_attr *attr)
                return 0;
        default:
                return -ENXIO;
-               break;
        }
 }